.video-container {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  height:100%;
}
.vjs-poster {
    -o-object-fit: cover;
       object-fit: cover;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}
 .vjs-duration-button {
    display: flex;
    justify-content: center;
    align-items: center;
}
.vjs-duration-button .vjs-duration {
    text-align: center;
    font-weight:bold;
    width: 100%;
}
#my-video{
   position:  absolute;
   top: 0;
   left: 0;
   bottom: 0;
   right: 0;
   width: 100%;
   height:100%;
}

video{
     width: 100%;
     height:100%;
     -o-object-fit: cover;
        object-fit: cover;
}